/Engine/Plugins/Importers/USDImporter/Source/USDUtilities/Public/USDAttributeUtils.h
Adds a "Muted" CustomData entry to the attribute at the stage's UE state sublayer, which will prevent it from being animated when loaded into UE
namespace UsdUtils { bool UsdUtils::MuteAttribute ( [UE::FUsdAttribute](API\Plugins\UnrealUSDWrapper\UsdWrappers\FUsdAttribute) & Attribute, const [UE::FUsdStage](API\Plugins\UnrealUSDWrapper\UsdWrappers\FUsdStage) & Stage ) }